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Finding the Fourth Proportional to 450.65, 675.99 and 190.39

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Solution

The fourth proportional to 450.65, 675.99 and 190.39 is: 285.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.65 : 675.99 = 190.39 : x
  2. Step 2: Convert to fraction form
    450.65/675.99 = 190.39/x
  3. Step 3: Cross multiply
    450.65x = 675.99 × 190.39
  4. Step 4: Simplify right side
    450.65x = 128,698.36
  5. Step 5: Solve for x
    x = 128,698.36/450.65
  6. Step 6: Final answer
    x = 285.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.